Rev, as previously stated, that is not an EASY call. But i dunno. Guess it depends on your current situation. Let me put it this way and I guess you can consider it from a different angle, perhaps:
If I had the time to attend all the events as you referred to, dude was a really nice guy who has really helped me out in the past so I know he's not trying to use me (I know he is a genuine person), he's a friend, I'd get to meet all those people involved in the game (it really does matter WHO you know, and sometimes more than WHAT you know), and if I wasn't working on a current project car (as I am in reality) and if I could financially handle it without putting myself in major debt and frustation (so that when it's "all over", I'm not out in the snow naked and without toilet paper, and I was looking for a change/adventure/ somthing just more intrinsically beneficial,
I'd go for it. For me in my current situation, if someone invited me with such a proposition, I could not currently do it b/c of all the little things I have or plan on doing, It would just kinda not be able to fit in well, know what I mean... but I dont totally know your current situation.
In the end, the rewards of this little adventure may quite possibly greatly outway $4000 you put into it in the beginning.
Imagine the rewards:
1) Way more mechanic/engine/racing
knowledge after learning from some of the best. This will last a lifetime.
2) The
people you will meet and possibly become good friends with.
3) The
freebies (parts, hookups, etc)
4) Spending the amount of
track time that only others can wish about
5)
Waking up every morning to do something you ENJOY
6) Possibly getting your name in Magazines and possibly getting offers from other racers...
THen again, you could save your money and wouldn't have a $4000 credit card debt with interest to pay off. Put that money towards something else that interests you. Spend it all on your girl.
Seems like a pretty sweet deal to me, but things are easier said and imagined than done. Just think about it some more and make a smart decision that you won't regret (yeah, easier said than done

)